I like that, too. My step-dad used to use it.
My mother rarely (if ever) used cuss words - the few times she would get a bit angry or flustered, she’d say, “you pissant”. Kus-ick and Lyin’ Ted are both pissants!
Definition from Wikipedia:
Pissant is an epithet for an inconsequential, irrelevant, or worthless person, especially one who is irritating or contemptible out of proportion to his or her perceived significance.
LOL